這是課本的習題,請問一下囉~~
a very long,thin rod lying along the x axishas a linear
charge density of 35.0 nC/m.The rod moves in the x direction
at a speed of 15.0Mm/s.Find (a) the electric fieldthe rod creates at
the point (0,20.0cm,0)
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 163.25.118.38